Associated Press
FILE - In this May 27, 2011 file photo, Costco customers fill up gas as others wait in line for gas at a Costco gas station in Santa Clara, Calif. Cheaper gas won’t be enough to spur many more road trips this summer. Americans are too worried about their jobs and the economy to feel relief.  Economists and tourism experts are expecting only a small uptick in summer travelers. Gas prices are lower, but still high enough to keep lower-income Americans off the road. The job market is improving, but still shaky. And household debt remains high.  The bulk of road trippers, experts say, are taking shorter trips, reducing food and entertainment expenses or staying closer to home to conserve cash.  (AP Photo/Paul Sakuma)

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